Guías de práctica clínica
5. CONSIDERACIONES DE IMPLEMENTACIÓN
9.2 Tablas de evidencia revisiones sistemáticas
In A2 we dealt with the most numerous word class, nouns, and in A3 with another word class closely connected with nouns: determiners. Here we will deal with three more word classes: adjectives, adverbs and prepositions. Other word classes are dealt with in B2 (pronouns), A5 (verbs), A6 (auxiliaries) and A9 (conjunctions).
A4
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A4.1 Adjectives
Adjectives are an open word class (see B1). In notional terms they are often said to refer to qualities and attributes. But we can argue that nouns also do this. Whether we say ‘The mountain is high’ or ‘The height of the mountain . . .’ we are talking about an attribute of the mountain.
Identify the adjectives in this sentence, noting the criteria you used:
No other nation can produce a book collector on quite the heroic scale of Sir Thomas Philips, who amassed the greatest private library the world has ever seen.
As usual, we must turn to formal characteristics for a useful, applicable definition.
A word is an adjective if it meets all or some of the following conditions:
it can be used as a premodifier in noun phrases:
❏ a red car. This is called the
‘attributive’ use of adjectives
it can be used as a subject and object predicative (see A8):
❏ Her car is red. I painted
it red. This is called the ‘predicative’ use of adjectives it has comparative and superlative forms:
❏ happier/happiest
it is gradable:
❏ very happy
it occurs in postmodification: after indefinite pronouns (e.g.
❏ something red ,
nothing interesting), with certain adjectives (e.g. the only information available), and in special phrases (e.g. the president elect).
(rarely) it is the head of a noun phrase after the definite article:
❏ the poor (see the
Website Reference A3.1 for more adjectives used in this way).
Of these it is the first four characteristics that are most important in recognising adjectives. These are discussed in pairs below.
Attributive vs predicative
Most adjectives can be used in both positions, e.g. It’s good food (attributive) and This food tastes good (predicative). However, a number of adjectives only occur as premodifiers of nouns, e.g. an utter fool, the chief troublemaker, my former boss, a lone traveller. You cannot say ‘my boss is former’. These are called attributive adjectives.
And some only occur after verbs such as be, e.g. afraid, asleep, unwell, e.g. She’s unwell, not ‘she’s an unwell person’. These are called predicative adjectives. (See the Website Reference A4.1 and A4.2 for more adjectives used in these ways.)
Predicative adjectives tend to refer to situations that are not lasting, whereas attributive adjectives refer to more permanent characteristics. This explains why you cannot talk about ‘an unwell person’ or ‘an afraid person’; but you can say a sick person or a frightened person.
Sometimes an adjective which can be used in both positions may change its meaning:
✪
Activity A4.1Attributive: My old friend . . . (referring to the length of the friendship) vs Predicative: My friend is old. (referring to someone’s age)
Attributive: My late husband . . . (he’s dead) vs Predicative: My husband is late.
Gradability and the comparison of adjectives
Many adjectives are ‘gradable’; that is, the ‘quality’ they refer to can have different degrees, and so they can be used with a wide range of adverbs that are sometimes called ‘intensifiers’, such as very, quite, rather, fairly, pretty, so, too, how, incredibly, completely:
very happy, too expensive, how big
One such adverb is placed after the adjective: happy enough.
One very obvious feature of some adjectives is that they can change their form, like nouns and verbs; they have special endings, or inflections. The two forms that we are talking about here are the comparative and superlative, for example:
basic form: tall comparative: taller superlative: tallest
The inflections -er and -est are added to the end (or -r and st, if the word already ends in -e, and -ier or -iest to replace a final -y if preceded by a consonant). This changing of form is known as the ‘comparison’ of adjectives.
Not all adjectives have inflectional comparison; many, generally longer adjectives have ‘phrasal’ comparison (i.e. more than one word), using more and most as adverbs to modify them:
basic form: beautiful comparative: more beautiful superlative: most beautiful
The rule that is usually given for deciding between the two possibilities is as follows:
onesyllable adjectives have inflectional comparison, as with
❏ tall
adjectives with three (or more) syllables have phrasal comparison, as with
❏
beautiful
twosyllable adjectives are variable; those ending in
❏ -y, -ow, -er, -ere, -ure may
inflect (wealthier, shallower, cleverer, sincerer, securer), but they can also have phrasal comparison. This choice also applies to a number of other twosyllable adjectives (politer/more polite), otherwise phrasal comparison is the norm.
Section C4 investigates this in some detail and finds that these ‘rules’ often do not apply. For example, some onesyllable adjectives can have phrasal comparison and some threesyllable adjectives can have inflectional comparison.
Two adjectives have irregular forms for comparison: good (better, best) and bad (worse, worst). Two others have irregular alternatives to the regular forms: far ( farther/
further, farthest/furthest) and old (older/elder, oldest/eldest).
The comparison and gradability of adjectives are related. Obviously, if we can talk about a quality that has different degrees (very large, quite large) then we can also use it in comparisons (larger). Some adjectives, however, have one but not the other
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(see, for example, glad in Activity A4.2 below); and many adjectives, e.g. electric, national, have neither possibility.
Two types of adjective that are particularly noteworthy are -ed and -ing adjectives:
an interesting story a bored listener
These are derived from the equivalent participles (see A5), but we can tell they are adjectives first by their attributive position and by the fact that they may be gradable (very interesting) and can have comparison (more interesting).
The meaning of comparative and superlative forms
The three forms of adjectives are often introduced in teaching materials with a picture of three children or buildings, or trees, as in this diagram:
TALL TALLER TALLEST
Figure A4.1.1 The meaning of comparatives and superlatives 1
This may give the impression that they describe three different degrees of tallness, but this would be incorrect. The meaning of tall is established in absolute terms, whereas taller and tallest are established relatively. Thus it is perfectly possible to be
‘taller’ or ‘tallest’, but not ‘tall’, as these examples show.
She’s taller than him, but I wouldn’t say she’s tall.
He’s the tallest in his class, but I wouldn’t say he’s tall.
So this diagram is also accurate:
SHORT TALLER
(BUT NOT TALL) TALLEST (BUT NOT TALL) Figure A4.1.2 The meaning of comparatives and superlatives 2
We should not forget that there are other ways of making comparisons using adjectives: . . . (not) as tall as . . . , . . . less tall than . . . , . . . least tall . . .
How ‘adjectival’ are these adjectives? Look at the adjectives in the table below and put a tick where the property applies. Use your intuitions (or a dictionary).
Table A4.1.1 How ‘adjectival’ are adjectives?
a.
dead b.
glad c.
large d.
main e.
aware 1. Attributive: ‘a ____ NOUN’
2. Predicative: ‘he’s ____’
3. Gradable: e.g. ‘very ____’
4. Comparative (with -er or more)
Adjective phrases
Many adjectives in predicative position can be followed by a phrase or clause to give more information. For example:
I’m happy for you.
I’m happy that he’s finally found someone.
And some have to be:
I’m fond of her. (Not ‘I’m fond.’) They’re unable to come.
These phrases or clauses which complete the meaning of the adjective are sometimes called ‘complements’. (See A3 and A10 for more on complements.) Many adjectives are typically associated with a particular preposition in such phrases, e.g., fond of or dependent on.
Adjective phrases can also occur as postmodifiers of nouns: a plan bound to fail.
Such cases can be related to a relative clause (a plan which is bound to fail – see B10).
Adjective phrases are also common with comparatives and intensifiers to give more information about the basis of comparison or ‘intensification’.
She’s happier than she has ever been.
We’re as happy as it’s possible to be.
The difference is too small to worry about.
A4.2 Adverbs
Adverbs are an open word class (see B1). They consist of a number of subclasses, some of which are only loosely connected to the others (for example, the intensifiers described
Activity A4.2
✪
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above). They have been called a ‘ragbag’ – a place for putting unwanted things. Isolated systems of words, such as yes and no, please, and not, are usually included in adverbs, though they have little in common with them. As a result they are much harder to define than other word classes.
Traditionally adverbs have been thought of as words derived by the addition of -ly to adjectives that modify the meaning of verbs in terms of their manner, time and place. However, there is a vast range of meanings conveyed by adverbs, and not all of them modify verbs. We have already seen one such case: intensifiers, used to modify adjectives: very happy. And a lot of adverbs, even those to do with manner, time and place, do not end in -ly.
Put your hands together.
I soon realised he wasn’t coming.
Put the money there.
Identify the adverbs in these sentences:
1. Have they arrived yet?
2. Even my mother likes her slightly.
3. He’s not quite ready.
4. I was only looking at it.
Form and function
As regards their form, unlike the other three open word classes (nouns, adjectives, verbs), adverbs do not have any inflections that can be used to identify them, apart from a few endings of limited application, such as -wards (e.g. afterwards), -ways (e.g.
sideways) and -wise (e.g. lengthwise). The -ly inflection is not a reliable indicator, partly because, as mentioned, many adverbs do not end in -ly, but also because many words ending in -ly are adjectives, for example:
costly, daily, deadly, friendly, kindly, kingly, likely, lively, lonely, lovely, ugly, weekly
These do not add -ly to form adverbs; you cannot say ‘she spoke lovelily/friendlily’.
In addition, there are some adverbs that have the same form as adjectives, for example, late, early, fast, straight, dead:
We arrived late. It’s dead easy.
Just as with the corresponding adjective, these may form comparatives and super
latives where appropriate with -er and -est:
He arrived later/earlier than expected.
Otherwise comparison is formed using more and most: more politely.
We should also note that there are some ‘ly’ adverbs that are not related in meaning to adjectives even though they appear to be, e.g. hardly, lately, largely:
I hardly know him.
Since adverbs do not have any distinctive morphological features, we need to refer to their structural role for identification. Adverbs have two main grammatical functions:
✪
Activity A4.3as the modifier of another word, as we saw above with intensifiers, e.g. of
❏
adjectives (He’s very happy. He’s a very happy man.), other adverbs (e.g. very quickly, only now) or pronouns and noun phrases (e.g. They won’t like it, especially her).
as the adverbial element in a clause
❏ : We walked slowly. See A8 for more on
adverbials, especially their position in the sentence.
Write two sentences for each of the following words, one where they are adverbs and one where they are adjectives: harder, kindly, later, fast, well.